Safe to use. The Raffaelo wool dryer balls are safe for people even for the people with sensitive skin and also suitable for towels and cloth diapers since the dryer balls are made of nature New Zealand wool and doesn’t use any unwanted material..Reusable. The performance of dryer balls may vary depending on the model of the dryer, however, this dry balls are reusable with around 1000+ load, can be used over and over again to support our living environment. Around 1.6-2 oz average for each ball weights and we suggest that three balls are to be used together in each laundry load..Alternative choice to dryer sheets. The Raffaelo wool balls are an energy-saving alternative choice to plastic dryer balls or dryer sheets. Raffaelo wool dryer balls can also reduce your dry time, decreasing energy use and cost. They can soften clothes without the use of unwanted material may contain in dryer sheets. Raffaelo wool dryer ball can leave your clothes and towels with smelling fresh and clean..Aboard usage. This wool dryer ball is suitable for all types of clothing, towels, linens, natural fibers, cotton, linen, bamboo, etc., can decrease wrinkles and static in clothes for time saving..Good performance. The characteristic differences may occur for each dryer ball, but please be confident they all perform the same and very well. It to be a ideal one as welcomed gift for family and friends when holidays, birthday, housewarming, Christmas, wedding, Thanksgiving, Black Friday, Cyber Monday or other holidays.